MESON Chess Problem Database
Problem Display
PID: 258109 (8/8/8/N2B4/p1r5/p1R4Q/8/k1K5 w - - 0 1)
Speckmann, Werner
Berliner Morgenpost, 1977
(First published on Sat Dec 3 1977)
#2
5 + 4
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxc3+
- 2.Qxc3#
- 1...Rb4
- 2.Rxa3#
- 1...Rd4
- 2.Rxa3#
- 1...Re4
- 2.Rxa3#
- 1...Rf4
- 2.Rxa3#
- 1...Rg4
- 2.Rxa3#
- 1...Rh4
- 2.Rxa3#
- 1...Rxc3+
- Tries
- 1.Kc2?
- 1...Rxc3+
- 2.Qxc3#
- 1...Rb4
- 2.Rxa3#
- 1...Rd4
- 2.Rxa3#
- 1...Re4
- 2.Rxa3#
- 1...Rf4
- 2.Rxa3#
- 1...Rg4
- 2.Rxa3#
- 2.Qf1#
- 1...Rh4
- 2.Rxa3#
- 2.Qf1#
- 1...Rc5
- 2.Qf1#
- 2.Qh1#
- 1...Rc6
- 2.Qf1#
- 2.Qh1#
- 1...Rc7
- 2.Qf1#
- 2.Qh1#
- 1...Rc8
- 2.Qf1#
- 2.Qh1#
- 1...a2
- 2.Qf1#
- 2.Qh1#
- 1...Ka2!
- 1...Rxc3+
- 1.Sb3+?
- 1...Ka2
- 2.Qg2#
- 2.Qh2#
- 1...axb3!
- 1...Ka2
- 1.Sxc4?
- threat
- 2.Rxa3#
- 1...Ka2
- 2.Rxa3#
- 1...a2!
- threat
- 1.Rxc4?
- threat
- 2.Qxa3#
- 1...a2
- 2.Qc3#
- 2.Qh8#
- 1...Ka2!
- threat
- 1.Qg2?
- 1...a2
- 2.Qb2#
- 1...Rb4
- 2.Rxa3#
- 2.Qa2#
- 1...Rd4
- 2.Rxa3#
- 2.Qa2#
- 1...Re4
- 2.Rxa3#
- 2.Qa2#
- 1...Rf4
- 2.Rxa3#
- 2.Qa2#
- 1...Rg4
- 2.Rxa3#
- 2.Qa2#
- 1...Rh4
- 2.Rxa3#
- 2.Qa2#
- 1...Rc5
- 2.Qa2#
- 1...Rc6
- 2.Qa2#
- 1...Rc7
- 2.Qa2#
- 1...Rc8
- 2.Qa2#
- 1...Rxc3+!
- 1...a2
- 1.Qh2?
- 1...a2
- 2.Qb2#
- 1...Rb4
- 2.Rxa3#
- 2.Qa2#
- 1...Rd4
- 2.Rxa3#
- 2.Qa2#
- 1...Re4
- 2.Rxa3#
- 2.Qa2#
- 1...Rf4
- 2.Rxa3#
- 2.Qa2#
- 1...Rg4
- 2.Rxa3#
- 2.Qa2#
- 1...Rh4
- 2.Rxa3#
- 2.Qa2#
- 1...Rc5
- 2.Qa2#
- 1...Rc6
- 2.Qa2#
- 1...Rc7
- 2.Qa2#
- 1...Rc8
- 2.Qa2#
- 1...Rxc3+!
- 1...a2
- 1.Qd3?
- threat
- 2.Qb1#
- 1...Rxc3+
- 2.Qxc3#
- 1...Ka2
- 2.Qb1#
- 1...Rb4
- 2.Rxa3#
- 1...a2!
- threat
- 1.Kc2?
- Keys
- 1.Qh8!
- 1...Rxc3+
- 2.Qxc3#
- 1...Ka2
- 2.Rc2#
- 1...a2
- 2.Rxc4#
- 1...Rb4
- 2.Rxa3#
- 1...Rd4
- 2.Rxa3#
- 1...Re4
- 2.Rxa3#
- 1...Rf4
- 2.Rxa3#
- 1...Rg4
- 2.Rxa3#
- 1...Rh4
- 2.Rxa3#
- 1...Rc5
- 2.Rxc5#
- 1...Rc6
- 2.Rxc6#
- 1...Rc7
- 2.Rxc7#
- 1...Rc8
- 2.Rxc8#
- 1...Rxc3+
- 1.Qh8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(d);CHECK,OGATE,XR(B)::QAB(C),XR(d)
- R(d);N_PINR(B)::R(B),XP(b)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(d);CHECK,OGATE,XR(B)::QAB(C),XR(d)
- R(d);N_PINR(B)::R(B),XP(b)
- Refutation
- K(a);P-FLIGHT,P_SPINR(d)
- Try
- S(D);CHECK
- Refutation
- P(c);XS(D)
- Try
- S(D);N_SPINR(B),XR(d)
- Threat
- R(B),XP(b)
- Vars
- K(a);P-FLIGHT::R1(B),XP(b)
- Refutation
- P(b);
- Try
- R(B);N_SPINR(B),XR(d)
- Threat
- QAR2(C),XP(b)
- Refutation
- K(a);P-FLIGHT
- Try
- Q(C);
- Vars
- P(b);N_GUARD::QAB1(C)
- R(d);::QAR1(C)
- Refutation
- R(d);CHECK,XR(B)
- Try
- Q(C);
- Vars
- P(b);N_GUARD::QAB1(C)
- R(d);::QAR1(C)
- Refutation
- R(d);CHECK,XR(B)
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- R(d);CHECK,OGATE,XR(B)::QAB(C),XR(d)
- K(a);P-FLIGHT,P_SPINR(d)::QAB1(C)
- R(d);N_PINR(B)::R(B),XP(b)
- Refutation
- P(b);
- Try
- Actual
- Q(C);
- Vars
- R(d);CHECK,OGATE,P_SPINR(d),XR(B)::QAB(C),XR(d)
- K(a);P-FLIGHT,P_SPINR(d)::R(B)
- P(b);SBLOCK::QAB(C)+R(B),XR(d)
- R(d);N_PINR(B)::QAB(C)+R(B),DCHECK,XP(b)
- R(d);N_PINR(B)::R(B),XP(b)
- R(d);::QAB(C)+R(B),XR(d)
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